/Engine/Source/Runtime/Engine/Public/Animation/SkeletonRemapping.h
Get the specified additive translation retargeted from the source skeleton onto the target skeleton, corrected for differences between source and target rest poses
Translation mapped onto the target skeleton
FVector RetargetAdditiveTranslationToTargetSkeleton ( int32 TargetSkeletonBoneIndex, const FVector & SourceTranslation ) const